In article ,
says...
Now I am confused, Eric wrote
In composite construction, there is no "glue": the resin permeates the
other material (glass, carbon, Kevlar, etc), and the material
properties depend on this. There are layers of the fiber, but they
aren't glued together like the wood layers in plywood.

How is the fiberglass layer bonded to the foam core, if it isn't *glued* with
the resin? I thought you were making the distinction between several layers of
fiberglass cloth, as in a fuselage and fiberglass cloth/ foam core/ fiberglass
cloth, as we find in the wing.

It's my understanding that "composite" generally means the fiberglass
and epoxy itself. No core is needed to have a composite structu
just look at the fuselage construction of many fiberglass gliders.
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Eric Greenwell
Richland, WA (USA)